1900994772 has 48 divisors (see below), whose sum is σ = 4583194112. Its totient is φ = 612627840.

The previous prime is 1900994743. The next prime is 1900994773. The reversal of 1900994772 is 2774990091.

It is a happy number.

It is a super-2 number, since 2×1900994772² = 7227562246342663968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900994773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538758 + ... + 542274.

Almost surely, 2^1900994772 is an apocalyptic number.

1900994772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1900994772 is an abundant number, since it is smaller than the sum of its proper divisors (2682199340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1900994772 is a wasteful number, since it uses less digits than its factorization.

1900994772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 1900994772 is about 43600.3987596444. The cubic root of 1900994772 is about 1238.7784475535.

The spelling of 1900994772 in words is "one billion, nine hundred million, nine hundred ninety-four thousand, seven hundred seventy-two".